Did you read one single study I gave you? I gave you so many. You didn't read one? Look, it's not one single animal that gets this special gene and all of a sudden he can't breed with anyone. It's acting on a group. Let's take 2 million bacteria, and split them in 2 and put them in different environments with different selective pressures. After 5 years bacteria from the first group cannot breed with bacteria from the second group. These changes built up enough that they are distinct. But in no point was any bacteria in one group unable to breed with the rest of the group.
When creatures cannot breed they are by definition a distinct species. Even if very similar. Why is that hard for you to understand?
Each new creature is close enough it can breed with it's parents, it's siblings, and their children, and their grandchildren. But they are a bit different, those change accumulate and eventually they are too different to breed with some other bacteria or whatever that stayed red.
Astro the above are some of your quotes, and I think you helped prove my point more than yours.and since you are much smarter than me, as you have also said, thanks!
In the flounder example, yes, the new flounder is a new species, but still a flounder. And yet, the two species of flounder can't even breed with each other. And, even a lower level form, bacteria, can't breed other bacteria, from the SAME strainbut, the first EVER mammal can somehow breed a non-mammal, or even a "part mammal"?